Process of producing multicolored dye effects in woolen fabrics, &amp;c.



| UN TE STATES MVAXBECKE, oFfnooHsr PROCESS or PRODUClNG MULTICOLOREDovr'rrrtcrs m woor'ru emos. to.

is apspeciiication.

wool is treated with tanning substancesand metallicsalts, itspropertieswhen dyed are -totally changed. Hit em i-ioflonger be dyed withdyestuffs if fual'l"" employed in dye ing, as it has, acquired .tl e; 'property of combining witlf basic dyestuffs. I have found that these reelties ma be a died in a- P ll manifold and useful manner to'obtainbiand multicolored effects with woolen piece goods and yarns.

.lf wool or similar animal fibers, treated with tanning substances andmetallic salts, are spun or' woven together with\m'dinary wool, goodsare obtainmlwhich maybe dyed in melange or weaving ellects of a totallydifferent aspect, as the several parts .of these goods are of adifferent behavior toward the dyestuffs. The Wool treated with tanningsubstances and metallic salts readily absorbs basic dyestuffs, but doesnot combine with the ordinary dyestuffs for W001, especially with aciddyestuffs, wlnch,'as is known, are

much used in wool dyeing. The ordinary -wool, howevef, worked up inyarns and piece goods does not absorbthe basic dyestuffs in the presenceof treatedwool, but readil y com-- bincs with acid, chrome developing,and

mordant dyestuffs.

In finally dyeing three methods may be employed lirst, :gnly 'thetreated wool is.

dyed with basic dyestuffs, whereas the untreated wool remains undyed;second, only the untreated woolis dyed with acid or chrome-developingdyestuffs and the treated wool remains undyed third, the treated wool isdyed with basic dyestuffs, the untreated wool, however,with acid orchrome-developing dyestuffs. Besides, wool dyed with fast dyestuffs mayalso be treated with tanning sub-v stances and metallic salts, to bethen worked with ordinary wool into yarns and piece goods. I

dyestuffs, only the ordinary wool absorbs If these goods are dyed withacid the dyestuffs and not the wool previously dyed and treated withtanning substances and metallic salts. In this manner the most variedmulticolored effects maybe obtained.

' Specification-of Letters Patent.

' Application filed February 14, 1902. Serial No. 9 5065;

(PAT NT orr ion,

ON-TI-I 112M Al e ERM ANY.

J PatentedMareh 20, 1906."

WVool may be worked up in any state of condition, as loose material,slubbings, yarn, and thread. On finally dyeing melange, thread, warp,weft effects or combinations thereof are obtained, ac'cordingto thematerial employed. Besides, the tanning preparation maybe alsoapplied-on slubbings,'yarns, and pieces by way of printing. On finallydyein these goods the effects come outas bi or mu ticolored printingdesigns.

The process may profitably be. applied to all branches of the woolindustr in the manufacture of carded yarn and s ubbings, felts, hats,ladies and gcntlemens clothso'f' all kinds. p

()n finally dyeingthe goods the effects are ing directions: The dyeingof the treated wool is done with basic dyestuffs, preferably about tenper cent. of acetic acid fifty per cent. The best results are obtainedby using amnes, oxazines, and thiazmes, also aurannn the y also dye theuntreated wool. The more the reaction of the dyesbath is sourthe purerare theeifccts. The dyeing of the untreated wool, however, occurs in abath made up with Glaubers salt and acetic. acid at to 'centigrade. Herethe effects come-out-more prominently if the bath is not too sour, acon-. sidcrable quantity of Glauber.s salt being 85 ccntigrade. sideredmost of the acid and azo dyestuffs one sulfo group, especially in thepresence of strong basicgroups, are not advantageous for obtainingstrong color contrasts, as they also dye proportionately the treatedwool. To obtain specially pure effects ,and contf'asts of colors, it isadvisable to use the highersulfonat'ed. acid and azo dyestuffs, as theyonly slightly dye the treated wool. The presence beauty of the effects.1 Having now described my invention, 'what I claim is 1. Theprocessherein described of produc- Besides sheeps wool other hair of animalsbefinally dyed in different ways, as described.

rendered prominent by observing the followat boilingpoint, in a bathacidified with and. acridin-red, whereas the t' ri 'ihenyln'ie thancdyes'tufls produce lessgood elleets, as-

added and the temperature not sur assing' Of the dyestulls to 0 con-- mabe em )lo ed but those containin 0111 n b of strong acids in thebatliiufluences the in multicolored eflects in woolen and mixed goods orfabrics with acid dyestuffs, substanfal rics, which consists in treatinganimal tially asset forth.

air with a tanning substance and a metallic F 3. Woolen goods or wovenfabrics having salt, then working it with untreated fiber into lmulticolored dye efiects, and consisting of a 20 5 s un goods or wovenfabrics, and then dyeing, mixture of treated woolen fibers, rendered thegoods thus obtained with ordinary wool i dye-resistant by tanningsubstances and medyestufis in an acidbath, substantially as set tallicsalts, and of untreated fibers, said treatforth. cd and untreated fibersbeing dyed in dillcr- 2. The herein-described process of producl entcolors, substantially as set forth. 25 1o in multicolored effects inwoolen and mixed 5 In testimonyt hat I claim the foregoing as fa rics,which consists in dyein animal hair my invention I have signed my namein pres- With woolen dyestuffs fast to milling and acid, ence of twosubscribing witnesses. then treating with a tanning substance and MAXBECKE.

metallic' salt so as to render it dye-resistant, W itnesses: r5WOIlilIlg it then with untreated fiber into spun ALFRED BRISBOIS, goodsor woven fabrics, and then dyeing said HLINRIQH HAHN.

